Bicycle-pump.



NO. 6545947; Patented Jan. I, I90l. J.-HANNA. BICYCLE PUMP. AppIicAtion filed m 27, was.

(No Model.)

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Witt Luau "UNITED: STATES.

PATENT OFFIC JOSEPH HANNA, OF CHICAGO, ILLINOIS.

BICYCLE-PUMP.

' SPECIFICATION forming part of Letters Patent No. 664,947, dated January 1, 1901. Application file d May 27, 1899- Serial No. 718,553..- \No model.) V v I To all whom it may concern: Beitknown that I, JOSEPH HANNA, residing at Chicago, in the county of Cook and State of Illinois, have invented a new anduseful ,forcin air into pneumatic tires, and more especially to that class of air-pumps which on account of their special construction and size 'are' particularly adapted for use by bicyclists powerful and quick-acting pump of this class which, while improved in the respects mentioned, will also be so compact as to permit of its construction small enough to carry in the pocket. v 1 With this object in view my invention consists in the improved construction, arrangement, and combination of parts hereinafter 'fully described and afterward specifically pointed out in the appended claim.

In order to enable others skilled in theart to which my invention most nearly appertains to make and use the same, I will now proceed to describe its construction and operation, ref erence being had to the accompanying drawings, forming part hereof, in which- Figure l is a perspective view of a pump constructed in accordance with my invention. Fig. 2 is a plan view thereof, the pistons and the circular lines of travel of the handle and crank-arm being indicated in broken lines. Fig. 3 is a viewin side elevation, parts being broken away.

Like numerals indicate the same parts in all of the figures of the'drawings.

Referring to the drawings by numerals, 5 and 6 indicate two rings connected together at their adjacent sides and secured to one end of a bar 7, similarly constructed and connected rings 8 and 9 being secured to the opposite end of said bar. The rings and bar 7 are shown as formed of a single casting, although they may be made of as many pieces as are desired and connected rigidly together by any suitable means. The rings 5 and 8 are in line with each other, as are also the rings 6 and 9, and the bar T is shown as provided with downward-projecting ends 10 and 11, attached to or forming part of the webs o'r plates 12 and 13, which connect the rings.

14, 15, 16, and 17 indicate cylinders secured in the rings 5, 6, 8,:and 9, respectively, in each of which is a piston, as shown at 18 19 2O 21 in broken lines in Fig. 2, the pistons being provided, with piston-rods 22, 23, 24, and 25, respectively, said rods projecting through the inner ends of the several cylinders and being rigidly secured to a slide block or bar 26, provided with a slot 27. This bar is between and parallel with the pairs of rings 5 and 8 and 6 and 9 and below and at right angles to the bar 7. A short shaft 28 is journaled centrally in bar 7 and is provided on its upper end with a handle 29 and on its lower end with a crank-arm 30, the latter being bent downward at its-outer end, as at 31, into the slot 27 and provided with a friction-roller 32, as best shown in Fig. 1.

The pump-cylinders are provided at their outer ends with exit or discharge pipes 33, 34, 35,.and 36. The pipes 33 and 34 atone end and the pipes 35 and 36 at the other end of the pumps are connected with a single pipe 37, which is provided with a nozzle 38 to receive the ordinary hose 39 for connection with the tire to be inflated. Check-valves 40 and 41 are provided in pipe 37 at its opposite ends, opening toward its center, and the cylinders may be provided with entrance-valves, as at 4:2 and $3.

The operation of the invention will be readily understood. The operator, grasping the pump in one hand and the handle in the other, the hose having been previously connected to the nozzle of the tire, will rotate the shaft 28, which will carry crank-arm 30 and roller 32 with it and cause the bar 7 to be reciprocated, thus working all of the plungers'and forcibly injecting air intothe tire.

Although I have shown two cylinders on each side, it will be' readily understood that this number may be increased or diminished, as may be desired.

While I have illustrated and described what I consider to be the best means now known to me for carrying out my invention, I do not wish to be understood as restricting myself to the exact forms and constructions shown, as many slight changes therein or would be clearly included within the limit variations therefrom might suggest themselves to the ordinary mechanic, all of which and scope of my invention.

Having thus fully described myiuvention, what I claim, and desire to secure by Letters Patent of the United States, is-

In a bicycle-pump, the combination, with a centrally-perforated bar, each end of which is bent at an angle and formed into a. laterally-extending web, each end of the web being provided with a ring, the axes of the rings upon the opposite sides of the bar being in alinement with each other, of a cylinder secured within each ring, the outer' end of which is provided with an inlet and an outlet, a piston in each cylinder, the rod of which extends through the ring, a slotted bar secured at its ends to the ends of the pistonrods, a crank journaledin the perforation of the first-mentioned bar, the inner end of which is bent into a crank and has its end within the slot of the second-mentioned bar, a roller upon said end, and a valved pipe communicating with all the outlet-openings of the cylinders and provided with a nozzle,

JOSEPH HANNA. Witnesses:

EDWARD JEDLICKA, JOSEF REJSEK. 

